Download or read book Improved Methods for Predicting the Effects of Barriers on Blast Noise Levels written by Jeffrey Sullivan and published by . This book was released on 1993 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blast Noise Prediction Volume I Data Bases and Computational Procedures written by Paul D. Schomer and published by . This book was released on 1981 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past several years, the Construction Engineering Research Laboratory has gathered data from various sources dealing with blast noise generation and propagation and has performed several sets of field measurements designed to enhance this data base. These studies have been performed as a part of efforts aimed at improving methods of predicting the noise impact of military installations. Specifically included are measurements of the directivity pattern of major Army weapons and the statistical propagation and blast noise in the atmosphere. Volume I of this report develops and explains the relations among the various data bases which have been developed to predict blast noise impact of Army facilities. From these studies, data bases and computational procedures which are used within the Blast Noise Prediction computer program (BNOISE 3.2) are developed.
Download or read book Blast Noise Prediction Volume II BNOISE 3 2 Computer Program Description and Program Listing written by Lincoln L. Little and published by . This book was released on 1981 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past several years, the Construction Engineering Research Laboratory has gathered data from various sources dealing with blast noise generation and propagation and has performed several sets of field measurements designed to enhance this data base. These studies have been performed as a part of efforts aimed at improving methods of predicting the noise impact of military installations. Specifically included are measurements of the directivity pattern of major Army weapons and the statistical propagation of blast noise in the atmosphere. User instructions and a system description for Blast Noise Prediction computer program, BNOISE 3.2 are given in Volume II. Also included is the procedure for using the program to obtain a noise contour for a specific set of data; how subroutines are invoked in a modular fashion; a description of module functions; module calling procedure; algorithms used by the program; and a summary of error messages.
Download or read book Fernan Lake Road Safety Improvement Project Koontenai County written by and published by . This book was released on 2005 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effectiveness of Predictive Computer Programs in the Design of Noise Barriers written by J. K. Haviland and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The early work of the Virginia Department of Highways and Transportation on highway traffic noise was focused on a model and a computer program for predicting the noise levels likely to be generated by traffic on proposed highways. The computer program was also used to design barriers to shield neighborhoods from such noise. Because of the cost of noise barriers and the millions of dollars worth of barriers being planned, there was a need to evaluate the efficacy of the predictive computer programs used to design the barriers. For the evaluation, noise measurements were taken before and after construction of an earth berm and plywood wall alongside I-495 in Northern Virginia. The effect of the barrier was taken as the difference between the drop-off in noise level from the roadside to the location under study, as measured before and after construction of the barrier. The measured effect, obtained in this manner, was compared to the effect predicted by hand calculator using the current FHWA model. in a straightforward comparison, all but a few of the measured effects were less than the predicted effects and less than half of them were within 3 dB of the predicted values. However, when the effects of the time of day and human activity within the neighborhood were taken into account, 65% of the noise values obtained during periods of low human activity were within 3 dB of the predicted values. Much of the discrepancy can be attributed to local noise, not accounted for in the prediction, thus it is thought that the computer program can be effectively used in designing noise barriers. By monitoring the neighborhood activity it was determined that while noise such as that from jet lanes and lawn mowers sometimes overrode the traffic noise from I-495, the latter clearly dominated the noise environment of the neighborhood. direct correlations made between variations in L10 levels and truck traffic and between L50 and L90 levels and automobile traffic seem to support the generalization that the L10 levels are controlled by trucks and the L90 levels are controlled by automobiles.
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1982 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1982 with total page 1010 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Download or read book Springer Handbook of Acoustics written by Thomas Rossing and published by Springer Science & Business Media. This book was released on 2007-06-21 with total page 1179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an unparalleled modern handbook reflecting the richly interdisciplinary nature of acoustics edited by an acknowledged master in the field. The handbook reviews the most important areas of the subject, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, including computer recognition and synthesis of speech, physiological acoustics, diagnostic imaging and therapeutic applications and acoustical oceanography. An accompanying CD-ROM contains audio and video files.
Download or read book Anaconda Nevada Moly Project Permit written by and published by . This book was released on 1980 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book BNA Noise Regulation Reporter written by and published by . This book was released on 1987 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Pollution Control written by and published by . This book was released on 1980 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Ames Aerodynamics Testing Program written by and published by . This book was released on 1998 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seattle Tacoma International Airport South Aviation Support Area Port of Seattle written by and published by . This book was released on 1994 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Graymont Western Inc Indian Creek Mine Expansion written by and published by . This book was released on 2010 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Safety Literature written by and published by . This book was released on 1974 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
